It includes a 9- volt battery for continued function in the event of a power outage it features a test/ silence button, tamper- resistant locking brackets a universal mounting bracket. View and Download First Alert SA520 user manual online. 120V PLUG- IN CARBON MONOXIDE ALARM WITH BATTERY BACK- UP AND TEST/ SILENCE. SA520 Smoke Alarm pdf manual download.

First alert smoke detector sc9120b manual. The Encore Firefighter FF345 is a Honeywell and 2GIG compatible wireless audio module that can be used to remotely monitor your existing wired smoke detectors. This First Alert SC9120B Hardwired Smoke and Carbon Monoxide Detector includes a 9- volt battery backup that continues to protect you in the event of a power failure. The First Alert BRK SC9120B Hardwired Combination Smoke Carbon Monoxide Alarm uses an electrochemical CO sensing technology Ionization sensor for smoke detection.

Smoke Duty free

This First Alert SC9120B Hardwired Smoke and Carbon Monoxide Detector includes a 9- volt battery backup that continues to protect you in the event of a power failure. The First Alert BRK SC9120B Hardwired Combination Smoke and Carbon Monoxide Alarm uses an electrochemical CO sensing technology and Ionization sensor for smoke detection. It includes a 9- volt battery for continued function in the event of a power outage, and it features a test/ silence button, tamper- resistant locking brackets, and a universal mounting bracket.